//
//  MJRefreshNormalHeader.m
//  MJRefreshExample
//
//  Created by MJ Lee on 15/4/24.
//  Copyright (c) 2015年 小码哥. All rights reserved.
//

#import "MJRefreshNormalHeader.h"
#import "NSBundle+MJRefresh.h"

@interface MJRefreshNormalHeader()
{
    __unsafe_unretained UIImageView *_arrowView;
}
@property (weak, nonatomic) UIActivityIndicatorView *loadingView;
@property (weak, nonatomic) UIImageView *myLoadingIV;

@end

@implementation MJRefreshNormalHeader
#pragma mark - 懒加载子控件
- (UIImageView *)arrowView
{
//    if (!_arrowView) {
//        UIImageView *arrowView = [[UIImageView alloc] initWithImage:[NSBundle mj_arrowImage]];
//        arrowView.hidden = YES;
//        [self addSubview:_arrowView = arrowView];
//    }
    return _arrowView;
}

- (UIImageView *)myLoadingIV {
    
    if (!_myLoadingIV) {
        
        UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage sd_animatedGIFNamed:@"loading"]];
        iv.alpha = 0.0;
        [self addSubview:_myLoadingIV = iv];
    }
    
    return _myLoadingIV;
}

- (UIActivityIndicatorView *)loadingView
{
//    if (!_loadingView) {
//        UIActivityIndicatorView *loadingView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:self.activityIndicatorViewStyle];
//        loadingView.hidesWhenStopped = YES;
//        [self addSubview:_loadingView = loadingView];
//    }
    return _loadingView;
}

#pragma mark - 公共方法
- (void)setActivityIndicatorViewStyle:(UIActivityIndicatorViewStyle)activityIndicatorViewStyle
{
    _activityIndicatorViewStyle = activityIndicatorViewStyle;
    
    self.loadingView = nil;
    [self setNeedsLayout];
}

#pragma mark - 重写父类的方法
- (void)prepare
{
    [super prepare];
    
    self.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
}

- (void)placeSubviews
{
    [super placeSubviews];
    
    // 箭头的中心点
    CGFloat arrowCenterX = self.mj_w * 0.5;
    if (!self.stateLabel.hidden) {
        CGFloat stateWidth = self.stateLabel.mj_textWith;
        CGFloat timeWidth = 0.0;
        if (!self.lastUpdatedTimeLabel.hidden) {
            timeWidth = self.lastUpdatedTimeLabel.mj_textWith;
        }
        CGFloat textWidth = MAX(stateWidth, timeWidth);
        arrowCenterX -= textWidth / 2 + self.labelLeftInset;
    }
    CGFloat arrowCenterY = self.mj_h * 0.5;
    CGPoint arrowCenter = CGPointMake(arrowCenterX, arrowCenterY);
    
    // 箭头
    if (self.arrowView.constraints.count == 0) {
        self.arrowView.mj_size = self.arrowView.image.size;
        self.arrowView.center = arrowCenter;
    }
        
    // 圈圈
    if (self.loadingView.constraints.count == 0) {
        self.loadingView.center = arrowCenter;
    }
    
    self.arrowView.tintColor = self.stateLabel.textColor;
    
    if (self.myLoadingIV.constraints.count == 0) {
        self.myLoadingIV.center = arrowCenter;
    }
}

- (void)setState:(MJRefreshState)state
{
    MJRefreshCheckState
    
    // 根据状态做事情
    if (state == MJRefreshStateIdle) {
        if (oldState == MJRefreshStateRefreshing) {

            self.myLoadingIV.alpha = 0.0;
            [UIView animateWithDuration:MJRefreshSlowAnimationDuration animations:^{
                
            } completion:^(BOOL finished) {
                // 如果执行完动画发现不是idle状态，就直接返回，进入其他状态
                if (self.state != MJRefreshStateIdle) return;
                
                
            }];
        }
    } else if (state == MJRefreshStatePulling) {
        self.myLoadingIV.alpha = 0.0;
    } else if (state == MJRefreshStateRefreshing) {
        self.myLoadingIV.alpha = 1.0; // 防止refreshing -> idle的动画完毕动作没有被执行
    }
}

//- (void)setState:(MJRefreshState)state
//{
//    MJRefreshCheckState
//    
//    // 根据状态做事情
//    if (state == MJRefreshStateIdle) {
//        if (oldState == MJRefreshStateRefreshing) {
//            self.arrowView.transform = CGAffineTransformIdentity;
//            
//            [UIView animateWithDuration:MJRefreshSlowAnimationDuration animations:^{
//                self.loadingView.alpha = 0.0;
//            } completion:^(BOOL finished) {
//                // 如果执行完动画发现不是idle状态，就直接返回，进入其他状态
//                if (self.state != MJRefreshStateIdle) return;
//                
//                self.loadingView.alpha = 1.0;
//                [self.loadingView stopAnimating];
//                self.arrowView.hidden = NO;
//            }];
//        } else {
//            [self.loadingView stopAnimating];
//            self.arrowView.hidden = NO;
//            [UIView animateWithDuration:MJRefreshFastAnimationDuration animations:^{
//                self.arrowView.transform = CGAffineTransformIdentity;
//            }];
//        }
//    } else if (state == MJRefreshStatePulling) {
//        [self.loadingView stopAnimating];
//        self.arrowView.hidden = NO;
//        [UIView animateWithDuration:MJRefreshFastAnimationDuration animations:^{
//            self.arrowView.transform = CGAffineTransformMakeRotation(0.000001 - M_PI);
//        }];
//    } else if (state == MJRefreshStateRefreshing) {
//        self.loadingView.alpha = 1.0; // 防止refreshing -> idle的动画完毕动作没有被执行
//        [self.loadingView startAnimating];
//        self.arrowView.hidden = YES;
//    }
//}
@end
